sharif motion analyzer

Sharif Motion AnalyzerM. Hoviatalab

A. KolahiT. RezaeianM. AlizadehM. Bostan

Department of Mechanical Engineering, Sharif University of Technology

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An Overview on SMAMotion analysis software generally detects a target object in a scene, follows it over time, and determines its coordinates.

How it works?ComponentsTest ConditionsInstallation

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• Advanced User Interface

• Without Special Environment Limitations

• Low Cost of Hardware

• Portable

• 2D & 3D Applications

• Capturing up to 200Hz

• Built in Animator and Simulator units

• Built in units for Kinematics and Gait Analysis

An Overview on SMA

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How it Works

A block diagram of the hardware and software units

This system includes both hardware and software components.

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•System Components•Motion Capturing unit

•Synchronizing unit

•Deinterlacing unit

• Image Processing unit

•2D & 3D Reconstruction units

•Gait Analysis unit

•Segmentation unit

•2D & 3D Kinematics Analysis units

•Simulation and Animation units

Software Requirements

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Software Requirements

Microsoft Windows XP

MATLAB Version 7.0.1 (R14) Service Pack 1

a. DirectX, Version 9.0

b. Image Acquisition Toolbox, Version 1.7

c. Image Processing Toolbox, Version 5.0.1

d. Video and Image Processing Blockset, Version 1.0.1

Microsoft Office (Excel)

Hardware Requirements

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Hardware Requirements

Ideal configuration for this software is as following

Computer: CPU: Dual 3.0 GHz P4, RAM: 1 GB, DISK: 60 GB SATACamera: JVC GR-DVL 320A IEEE 1394 Host Controller

The calibration frameRemote Flasher

Markers

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Hardware Requirements

Remote Flasher

Motion Capturing Unit

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Capturing – Double Camera

User Interface of Double Camera Mode

Synchronizer Unit

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Synchronizer

User Interface of Synchronizer Unit

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Synchronizer

Left Camera

Diagrams of Frames Intensities

Right Camera

Image Processing Unit

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Image Processing

The image processing unit obtains 2D coordinates of all of the markers in each frame. It gets Deinterlaced frames as input and produces an Excel file of 2D coordinates of markers in an appropriate coordinate system defined by the user

Markers are made of Special phosphoric materials that distinguish them from background

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Image Processing – How it works

The Markers paths detected by Image Processing Unit

Gait Analysis

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Gait Analysis-How it works

User Interface of Gait Unit

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Gait Analysis

The location of markers on body for Gait Analysis

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Segmentation-How it works

User Interface of Segmentation Unit

Kinematics Analysis

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Kinematics Analysis

This unit calculates the following 3D Kinematics Parameters

Cardan AnglesHelical AnglesLinear velocityLinear AccelerationAngular VelocityAngular Acceleration

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Kinematics Analysis

An Example of Kinematics Analysis

Simulation and Animation

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Simulation and Animation

User Interface of 3D Max Simulator Unit

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Simulation and Animation

User Interface of 3D Max Simulator Unit in the 3D Max Environment

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Simulation and Animation

User Interface of Animator Unit

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Simulation and Animation

An example of Animator Unit

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Simulation and Animation

Gait Analysis

Biomechanical Applications

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Applications - Maei Geri

Maei Geri Ankle Angle

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Applications

Maei Geri Ankle Angle versus normalized duration

Maei Geri Ankle Angle

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Applications - Zenkoutso

Zenkoutso Shank Angle

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Applications

Zenkoutso Shank Angle versus normalized duration

Zenkoutso Shank Angle

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100110

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Ang

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Applications - Zoki

Zoki Elbow Angle

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Applications

Zoki Elbow Angle versus normalized duration

Zoki Elbow angle

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Applications - Combination

Combination Ankle vertical displacement

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Applications

Combination Ankle vertical displacement versus normalized duration

Combination Ankle vertical displacemet

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disp

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